Water-heater.



A. S. CARLSON.

WATER HEATER.

APPLICATION mso JULY 12. Isls.

Patented sept. 26, 1916.

2 SHEETS-SHEET 2.

. to the ordina-ry gas or oil'stoi'e without theV AXEL s. CARLSON, 0F Los ANGELES. CALIFORNIA.

WATER-H EATER.

specific-ation o Lettersv Patent. Patented Sept. 26, 1916.

Application filed July 12, 1915. Serial No. 89,230.

To (Ill 'whom it '1l-ulg] concern.'

Be it known that I, AXEL S. CaiiLsoN', a citizen of the United States, residingr at Los ngeles', in the county of Los Angeles and State of California, have invented new and useful Iniproreineiits inA VVater-Heaters, of.

which tlie following is a specification.

My invention relates to water heat-ers and mon` particularly to that class of heaters use-d in heating water for domestic purposes.

.It is an o lijeetof niyinvention to provide a water-heating device that may be. applied need of alterations of the parts of the stove. in order to make the attachment. Y

It is the further object of my invention to provide a water-heating device that .will heat water and at the same time make it possible to utilize tlie'tlaine for the heating. of aten-- sils which may be placed on the grate above the flame; the water-heatingdevice being connected with theordinary-stoifage or eirculating boiler in use for domestic purposes'. Thus it may be seen that water may be heated and at the same timea meal unify be in the cooking;r process with the utilization of but a single burner. In actual praeticefit has been found that a. tank of thirty gallons u ipacity was heated to a high temperature during the preparation of a single ine-al. :i:

It is also an object of my invention to so arrange the heating coil within my device that the maximum heat will be absorbed 'trom the llame aud at the. saine time adequate space be alioidcd for the`pa`s aje of tliellame to the grate above said coil.

Another object of my invention is to provide a device (hat is ("licap and Simple iii construction. and that may becasily adapted to any 'make of stove without the ncccssityeof special itting's for each makeof stove.

Heretofore it has been customary, when lieatingwater for domestic'purposes, to provide a tank anda special heating device for supplyingv heat thereto. lith my device suclran Voutfit' is nimeer-ssa ry.

- Illy-device is illustrate-din the accompanying drawings in \vliic Y Figure l iS a sectionfiiride-elevation showing the application" of 'the preferred form of my invention to the burner of an ordinary gas stove, Fig. 2 is a plan i iew of my device as applied and illustrating the arrangement of the heating coil. Fig. I. is a plan View of one complete convolution 0f the AheatingT coil. linev 4 1 of Fig. 3. -`ig. is a'section in side elevation of a modificati(inof my iiivention. Fig. is a plan view of Fig,

' More specifically, 10 is the burner of a gas stove of ordinary construction supplied with -fuel by the. supply pipe 11 upon which is mounted, by brackets 12 and 13 the annular' outer wall 14 of the heat cbauiber 15` formed upon the inner periphery o which is the iriternal 'flange 1G to 'which lare `attached the radial grate liars 17 having` inwardly extending portions 1S for the support of ulelrv sils placed over the flame, and outwardlyextending'portions 19 provided with lugs 2.0 which. rest upon the stove top AL-1. Secured to the lower portion o f the. inner periphery of thel wall of the heat chamber is an annular channel menibei'Q, the inner wall thereof being so positioned that there will be aspaee 24 between =said wall and'tlie burner `to afford circulation of'air. I

The heating enit-consists of Aaj pipe which is led througlnftliel channel member 22 and is arrai'iged in uniform eonvolutionsv around the inner face of `wall 14. and above the annular channel member The. uppermost stratum 2G of the heatingr coil is adjacent the inturncd flange 1G ofA the heat-- clian'iber and is so :iri'aiigeti that tlie pipe 4forms a spiral which. upon reaching' the center, reverses and again pas, in the. path of the former .spiral towithin the outer Coil of pipe. liarticular attention is directed to thc sectional liape o1' this pipe.` it beine; oval with' the major axis extending vertically so' r1 at is a section on the.

that the maximum amount of heatin coil:

can be crowded into the upper strata 2G without obstructing the flame in its passage from the burner to t-be grate. After the pipe has reached the outer coil it passes through openingr 2T in theoutcr wall 14 and connects with pipe l-v means of. union 29 to a storageor circulating tank of common construction frinn.\vhirh source the ivater returns through pipe As shown Yin Fig. 1. the heatingr coil advauccs in a uniform helix butin liifgs. and l the coil is .shown as ci'iteringthe heatingv chamber at fl() makin; one revolution Ill and upon coming io the point ofcntraiire is beni. outwardly at and makes another revolution 355 concentric with and on the outside of revolution upon reaching.' point ill passes aerotbc bend 3; and bends upwiardly as shown at 35 and continues 'in the same manner of the two last described convolutions. It will be seen that this arrangement causes two complete convolutions of the pipe to .lie in the same horizontal plane and all'ords the opportunity for arranging a greater length of pipe within a given area.

The modification of my invention as diS- closed in Figs. 5 and 6 necessitates the use of the same burner and grate 'arrangement but the circulatory system 'of the water is in some respects different, the heat chamber 3G consisting of an annular outer wall and a similar inner wall 37 spaced from each other and closed by -top member 38 and bottom member 39. Secured to the inner surface of the inner wall is an annular channel member 40 having its inner wall 41 spaced a distance 42 from the burner l0. Secured by screws'43 to the .uppcT portion of heat chamber 36 is an annular cap 38 upon which are secured the radial grate bars 17 whose for mation and function is the same as that shown in Fig. 1. i

In the modified form of my invention 'the water passes from a tank to the pipe44 which is secured within an elbow 45 threaded at one end 46 and engaging com lementary threads 47 within the outerwal of the.

heat chamber. The water then fills the/ane nular space 48' and passes out through. the

pipe 49 into the spirally arranged coil 19"v lafter passing through which it returns to the tank through the pipe 50.

annular opening 24 to provide proper com-v bustion of the gas. The flame then passes up through the heat chamber between'the convolutions of the upper strata 26 of the he .'ingcoil and 'out to the grate member, The horizontally 'disposed 'annular ring member 16 in conjunction with the Side wall 14 forms a pocket 51 in which a portion of the heat is trapped and affords the opportunity for the heatingcoil to absorb said heat; the annular channel ring member 22 protecting the heat coils from the direct draftr ofA cool air which is inclined to be drawn through the heating chamber and makes a more efficient trap for the heat caught by the ring member 16. Thus it may be seen that no heat is allowed to be wasted in this device but is either absorbed by the heating coil or applied to any utensil placed upon thc grate'.

The operation of the device is the same in the modified form as in Athe preferred form. The heat, however, trapped in a much Thus itis 4 seen that in the modiiied form a large quan smaller space 52 than that 'used in the pre ferredform. Otherwise the operation o1 the two devices is identical.

Vt'hat I claim is:

1.`In a `wate'rheater the combination of a burner, asheat chamber surrounding said burner having an outlet and'formed with an annular baiile plate at its upper edge anti a detachable obstructor plate at its lower end 'throu h which `the biii'n'e'r extends, ai water conduit extending theJ length of the heat chamber throughout thes'ulface of the inner wail thereof, and artially obstructing the outlet `to the heat cliambcr, and grate positioned over said outleti i 2. In a water heater 'the 'combination of a burner, a wall encircllinl the burner and eX- tending above andnbeow the upper face thereof, a conduit adjacent the inner face of said wall and gonnecting Wi'tlra source of conduit arranged in 'a coil 'above the burner and extendin'gafcross a' space at the upper of the 'wall-said coil connecting at one end with the fiirst named conduit and having its other 'endleading to a point of discharge aninwardly extending flange onsaid wall projecting over the outer portions of said 'coil a removable inwardly extending flange -on the lower end of. said `wall projecting to `ward 'said burer with its inner edge spaced therefrom, and a grate positioned over the coil. v -1 Y i 3. In a-water heater the combination of a burner, 'a walllencircling the burner and extending above and below the 'upper face thereof, a 'conduit'adjacent the inner face oflsaid wall and connecting 'with a source of water supply at it's lower end; mtubular conduit'arrang'edin a coil above the Yburner .and extending across a space at the upper `end .of lthe wall-,said coil connecting at one end with the lirstin'amed conduit and having its other end leading tota yointl of discharge, an inwardly extending ange on said wall projectingover the outer portions of said'coil, a demountable inwardly extending flange on the lower end of said wall projecting toward said burner .with its Vinner edge spaced therefrom, a vertically extending flange on the inner marginal edge of the last named Harige, and a grate positioned over the coil.

4. A combination of a burner, an annular wall encircling theburner and` extending above and below the upper surface thereof having an inwardly extending Harige on its upper edge and a detachable'inwardly extending tlange on; its lower edge, said last named flange terminating in spaced relation to the burner, a tubular conduit arranged in a coil and extending acrossthe opening formed at the upper end :of the wall, a tubu lar coil formed in continuation of the first lower end, and a grate positioned,` across the opening at the upper end of the wall.

5. In a combined stove and water heater,

.Y the combination of a burner, a wall encircling the burner'- and spaced therefrom forming a heat chamber, a removable inwardly extending flange on the lower end of said wall arranged below the upper surface yof the burner, an inwardly projecting flange on the upper end of said wall, arranged above the upper surface of the burner, 'a grate positioned above the opening formed at the upper end of said Wall, andA a water heating coil arranged adjacent the inner face of the wall encircling the burner, having its lower end connected with a source of water supply and its upper end leading to the point of discharge.

(3. In a water heater, the combination of n burner, a wall encircling the burner no spaced therefrom, and projecting theeabove, an inturned overhanging flange on the upper end of said wall, grate bars carried, by said flange, an inturned flange on the lower portion of the wall having its i1 ner annular edge encircling the burner and spaced therefrom, and a spiral conduit arranged adjacent the inner face of the wall between the upper and lower flanges.

7. In a water heater, the combination of a burne." a wall encircling the burner and spaced therefrom, and projectin a ove, an inturned overhanging ange on the upper end of said wall, grate bars carried by said flange, a removable inturned flange on the lower portion of the wall having its inner annular edge encircling the burner and spaced therefrom, and a spiral conduit arranged adjacent the inner face of the wall between the upper and lower flanges.

In testimony whereof I have sgnedmy l' name to this specification.

AXEL S. CARLSON.

there? 3 5 

